dect
/
linux-2.6
Archived
13
0
Fork 0
Code Releases Activity

MPI: Fix compilation on MIPS with GCC 4.4 and newer 

Since 4.4 GCC on MIPS no longer recognizes the "h" constraint,
leading to this build failure:

  CC      lib/mpi/generic_mpih-mul1.o
lib/mpi/generic_mpih-mul1.c: In function 'mpihelp_mul_1':
lib/mpi/generic_mpih-mul1.c:50:3: error: impossible constraint in 'asm'

This patch updates MPI with the latest umul_ppm implementations for MIPS.

Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com>
Cc: Linux-MIPS <linux-mips@linux-mips.org>
Cc: Dmitry Kasatkin <dmitry.kasatkin@intel.com>
Cc: James Morris <jmorris@namei.org>
Patchwork: https://patchwork.linux-mips.org/patch/4612/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Manuel Lauss 2012-11-22 11:58:22 +01:00 committed by Ralf Baechle
parent f93a1a00f2
commit a3cea98941
1 changed files with 17 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
lib/mpi/longlong.h
View File

@ -641,7 +641,14 @@ do { \
************** MIPS *****************
***************************************/
#if defined(__mips__) && W_TYPE_SIZE == 32
#if __GNUC__ > 2 || __GNUC_MINOR__ >= 7
#if __GNUC__ >= 4 && __GNUC_MINOR__ >= 4
#define umul_ppmm(w1, w0, u, v) \
do { \
UDItype __ll = (UDItype)(u) * (v); \
w1 = __ll >> 32; \
w0 = __ll; \
} while (0)
#elif __GNUC__ > 2 || __GNUC_MINOR__ >= 7
#define umul_ppmm(w1, w0, u, v) \
__asm__ ("multu %2,%3" \
: "=l" ((USItype)(w0)), \
@ -666,7 +673,15 @@ do { \
************** MIPS/64 **************
***************************************/
#if (defined(__mips) && __mips >= 3) && W_TYPE_SIZE == 64
#if __GNUC__ > 2 || __GNUC_MINOR__ >= 7
#if __GNUC__ >= 4 && __GNUC_MINOR__ >= 4
#define umul_ppmm(w1, w0, u, v) \
do { \
typedef unsigned int __ll_UTItype __attribute__((mode(TI))); \
__ll_UTItype __ll = (__ll_UTItype)(u) * (v); \
w1 = __ll >> 64; \
w0 = __ll; \
} while (0)
#elif __GNUC__ > 2 || __GNUC_MINOR__ >= 7
#define umul_ppmm(w1, w0, u, v) \
__asm__ ("dmultu %2,%3" \
: "=l" ((UDItype)(w0)), \